nasa says the asteroid will miss us by 17,200 miles. to put that in perspective, that's closer than the television satellites beaming your signal right now. researchers hope this asteroid can help them learn how to avoid collisions with larger ones, which could destroy the earth. >> we'll get much better data as it comes by. >> reporter: astronomers identified 1400 potentially hazardous asteroids which is just 10% of the most dangerous asteroids out there. live in the newsroom, cate caugiran, kpix 5. >>> olympic sprinter oscar pistorius sobbed in court today as murder charges were read against him. the double amputee known as "the blade runner" is accused in the death of his girlfriend, 30-year-old reeva steenkamp. she was found shot to death inside pistorius's home yesterday. in a statement, he disputes he murdered her in, quote, the strongest terms. however, prosecutors are expected to file additional charges including premeditated murder. >>> the san bernardino county coroner has positively identified the remains of christopher dorne